Notes

FAN spins up regularly without any visible temperature threshold, speed of Fan can't be read out

Summary

I wish the FAN would be less annoying or controllable in any way.

Also, not all deep ACPI C-states of the CPU work, PCIe ASPM (Power Management) does not work. Fujitsu did really not comply very much to the ACPI standard specifications. This means the runtime on battery is much shorter than would be possible - still over 5 hours an be reached with the standard battery (more with the extended).